CN211010040U

CN211010040U - Fluid pressure stabilizing valve with end cover sealing and supporting structure

Info

Publication number: CN211010040U
Application number: CN201922187211.1U
Authority: CN
Inventors: 陈添育; 张江涛
Original assignee: Guli Xiamen Technology Co Ltd
Current assignee: Guli Xiamen Technology Co Ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-07-14
Anticipated expiration: 2029-12-09

Abstract

The utility model discloses a take end cap seal bearing structure's fluid surge damping valve, including cavity valve body, supporting seat, case, elastomer, upper end cover, end cap seal bearing structure and bottom end cover. The hollow valve body is internally divided into a water inlet cavity and an air cavity by a partition plate, and the supporting seat is arranged above the partition plate. The water flow channel is formed in the valve core, the valve core comprises a valve post and a valve cap, the outer wall of the valve cap is in sealing fit with the inner wall of the air cavity, an exhaust hole is formed in the wall surface of the air cavity, the elastic body is arranged between the partition plate and the valve cap and is in a compressed state, the valve post penetrates through the partition plate and the supporting seat and can move up and down, and the end cover sealing and supporting structure comprises a sealing structure arranged at the bottom of the upper end cover and used for sealing the top of the valve post when the valve post runs to the highest point and a supporting ring. The utility model discloses a set up the sealed bearing structure of end cover, can effectively resist and overflow the little produced negative pressure in clearance, guarantee the working stroke and the steady voltage pressure of surge damping valve.

Description

Fluid pressure stabilizing valve with end cover sealing and supporting structure

Technical Field

The utility model relates to a pressure relief device technical field, in particular to take end cover seal bearing structure's fluid surge damping valve.

Background

As shown in fig. 1, in the conventional pressure reducing valve, a gasket 100 is placed on the valve element side of the upper end cap to achieve a complete sealing state. This solution has a potential risk: when fluid flows into the pressure reducing valve from the hole of the upper end cover at a high speed, negative pressure is generated on the valve core side of the upper end cover, and the gasket 100 placed at this time is separated from the upper end cover in a negative pressure state, so that the pressure reducing valve fails to function.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a fluid pressure stabilizing valve with an end cap seal support structure, which is used to support a support ring of the seal structure through the top of the support seat, thereby solving the technical problem that the gasket of the existing pressure reducing valve proposed in the background art is easy to drop and leads to the failure of the function of the pressure reducing valve.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

a fluid pressure stabilizing valve with an end cover sealing support structure comprises a hollow valve body, a support seat, a valve core, an elastic body, an upper end cover, an end cover sealing support structure and a lower end cover. The hollow valve body is internally divided into a water inlet cavity and an air cavity through a partition plate, the supporting seat is installed above the partition plate, the upper end cover is fixed at the upper end part of the hollow valve body, the upper end cover is provided with a water inlet hole, the lower end cover is fixedly installed at the lower end part of the hollow valve body, and the lower end cover is provided with a water outlet hole. And a water flow channel for communicating the water inlet hole and the water outlet hole is formed in the valve core along the axis direction. The case include valve post and valve cap, the outer wall of valve cap and the inner wall of air chamber are sealed to be cooperated, the exhaust hole has been seted up on the wall upper portion of air chamber. The elastic body is arranged between the partition plate and the valve cap and is in a compressed state, and the valve column penetrates through the partition plate and the supporting seat and can move up and down. The end cover sealing and supporting structure comprises a sealing structure arranged at the bottom of an upper end cover and used for sealing the top of the valve column when the valve column runs to the highest point, and a supporting ring arranged at the top of a supporting seat and used for supporting the sealing structure, wherein an overflowing hole used for communicating a water inlet hole with a water flow channel is formed in the wall surface of the supporting ring.

In one embodiment, the sealing structure is an annular boss which extends downwards from the center of the bottom of the upper end cover, the outer diameter of the annular boss is the same as the inner diameter of the support ring, and the inner wall surface of the support ring is in sealing fit with the outer wall surface of the annular boss.

In another embodiment, the sealing structure is a sealing gasket, a gasket groove is formed in the center of the bottom of the upper end cover, the sealing gasket is fixedly installed in the gasket groove, and the upper surface of the support ring abuts against the sealing gasket.

Furthermore, the upper portion of intake antrum is equipped with round annular step, the supporting seat fix on the annular step, the lower surface of supporting seat is the protrusion downwards and is formed a solid fixed ring, gu install Y type sealing washer between fixed ring's the internal face and the outer wall of valve post.

Further, valve post and valve cap be integrated into one piece structure, the valve post is established perpendicularly in valve cap top center department, rivers passageway run through completely valve post and valve cap, the Y shape sealing washer groove has been seted up on the outer wall of valve cap, the Y shape sealing washer inslot install be used for with the sealed complex Y type sealing washer of air cavity internal face.

Furthermore, the upper part and the lower part of the outer wall of the hollow valve body are respectively provided with an O-shaped sealing ring groove, and an O-shaped sealing ring is arranged in the O-shaped sealing ring groove.

Further, a water flow buffer area is arranged at the center of the bottom of the valve cap, and the cross section size of the water flow buffer area is larger than that of the water flow channel.

Furthermore, the water inlet holes are provided with a plurality of water inlet holes which are respectively staggered with the positions of the water flow channels.

Preferably, the elastic body is a spring or rubber.

Preferably, the material of the upper end cover is one of NBR, TPR, TPE and EPDM.

The utility model discloses following beneficial effect has: the utility model provides a take end cap seal bearing structure's fluid surge damping valve, through setting up end cap seal bearing structure, end cap seal bearing structure is including establishing in the upper end cap bottom and being used for carrying out sealed structure and establishing at the supporting seat top and being used for supporting seal structure's support ring at the supporting seat top when the valve stem moves to the peak, and the top of support ring supports seal structure, can effectively resist the little produced negative pressure in clearance that overflows, guarantees surge damping valve's working stroke and steady voltage pressure.

Drawings

Fig. 1 is a schematic cross-sectional view of a conventional pressure reducing valve.

Fig. 2 is an exploded view of the components of a pressure maintaining valve in the first embodiment.

FIG. 3 is a schematic cross-sectional view of a pressure maintaining valve according to an embodiment.

Fig. 4 is a diagram showing a pressure reduction process of the pressure maintaining valve according to the first embodiment, in which fig. 4 (a) is an initial state, fig. 4 (b) is a pressure reduction state, and fig. 4 (c) is a closed state.

Fig. 5 is a force diagram of the valve core.

Fig. 6 is a schematic perspective view of an upper end cap according to a first embodiment.

Fig. 7 is a schematic perspective view of an upper end cap according to another angle in the first embodiment.

Fig. 8 is a schematic perspective view of a support base according to an embodiment.

Fig. 9 is a schematic cross-sectional view of a pressure maintaining valve according to a second embodiment.

Description of the main component symbols: 100. a gasket; 1. a hollow valve body; 10. a partition plate; 101. an O-shaped seal ring groove; 11. a water inlet cavity; 111. an annular step; 12. an air chamber; 120. an exhaust hole; 2. a supporting seat; 21. a fixing ring; 22. a support ring; 220. an overflowing hole; 3. a valve core; 30. a water flow channel; 31. a spool; 32. a bonnet; 321. a Y-shaped seal ring groove; 322. a water flow buffer zone; 4. an elastomer; 5. an upper end cover; 50. a water inlet hole; 510. a gasket groove; 511. an annular boss; 512. sealing gaskets; 6. a lower end cover; 60. a water outlet hole; 7. an O-shaped sealing ring; 8. a Y-shaped seal ring; f1, spring pre-pressure; f2, fluid pressure.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Example one

As shown in fig. 2-8, a fluid pressure stabilizing valve with an end cap seal support structure comprises a hollow valve body 1, a support seat 2, a valve core 3, an elastic body 4, an upper end cap 5, an end cap seal support structure and a lower end cap 6. The elastic body 4 is a spring or rubber or other elastic parts, and the upper end cap 5 is made of elastic sealing material, preferably one of NBR, TPR, TPE and EPDM. The upper end cover 5 is fixed at the upper end of the hollow valve body 1 through modes such as threaded connection, a plurality of water inlet holes 50 are formed in the upper end cover 5 along the circumferential direction, the lower end cover 6 is fixedly installed at the lower end of the hollow valve body 1 through modes such as threaded connection, and a water outlet hole 60 is formed in the lower end cover 6. The upper part and the lower part of the outer wall of the hollow valve body 1 are respectively provided with an O-shaped sealing ring groove 101, and an O-shaped sealing ring 7 is arranged in the O-shaped sealing ring groove 101. The hollow valve body 1 is divided into a water inlet cavity 11 and an air cavity 12 by a partition plate 10, and a supporting seat 2 is installed above the partition plate 10. The upper portion of intake antrum 11 is equipped with round annular step 111, and supporting seat 2 is fixed on annular step 111, and the lower surface of supporting seat 2 projects downwards and forms a solid fixed ring 21.

The water flow channel 30 used for communicating the water inlet hole 50 with the water outlet hole 60 is formed in the valve core 3 along the axial direction, the valve core 3 comprises a valve column 31 and a valve cap 32, the valve column 31 and the valve cap 32 are of an integrally formed structure, the valve column 31 is vertically arranged at the center of the top of the valve cap 32, and the water flow channel 30 completely penetrates through the valve column 31 and the valve cap 32. The outer wall of the bonnet 32 is provided with a Y-shaped sealing ring groove 321, and a Y-shaped sealing ring 8 which is used for sealing and matching with the inner wall surface of the air cavity 12 is installed in the Y-shaped sealing ring groove 321. A Y-shaped sealing ring 8 is arranged between the inner wall surface of the fixing ring 21 and the outer wall surface of the valve column 31, an exhaust hole 120 is formed in the upper portion of the wall surface of the air cavity 12, the elastic body 4 is arranged between the partition plate 10 and the valve cap 32 and is in a compressed state, and the elastic body 4 is nested outside the valve column 31. A water flow relief area 322 is provided centrally at the bottom of the valve cap 32, the water flow relief area 322 having a cross-sectional dimension greater than the cross-sectional dimension of the water flow passage 30.

The valve column 31 passes through the partition plate 10 and the support seat 2 and can move up and down, and the end cover sealing support structure comprises a sealing structure which is arranged at the bottom of the upper end cover 5 and used for sealing the top of the valve column 31 when the valve column 31 runs to the highest point and a support ring 22 which is arranged at the top of the support seat 2 and used for supporting against the sealing structure. The top of the support ring 22 supports against the sealing structure, and the support ring 22 and the support base 2 are an integrated structure. The wall surface of the support ring 22 is opened with an overflowing hole 220 for communicating the water inlet hole 50 and the water flow passage 30. The sealing structure is an annular boss 511 formed by extending downwards from the center of the bottom of the upper end cover 5, the outer diameter of the annular boss 511 is the same as the inner diameter of the supporting ring 22, and the inner wall surface of the supporting ring 22 is in sealing fit with the outer wall surface of the annular boss 511.

The working principle of the embodiment is as follows:

initial state: fluid flows from the fluid inlet end, flows through the water flow channel 30 of the valve core 3 to the bottom end position of the valve core 3, and the fluid pressure has an upward acting force on the valve core 3. When the pressure is lower than F1, a pre-pressure F1 is applied to the elastic body 4, and the fluid pressure F2 is not enough to push the valve core 3 to move, so that the valve core 3 is kept in the initial state.

And (3) a reduced-pressure state: the fluid pressure F2 increases until the pressure acting on the bottom end of the valve element 3 is greater than the pre-pressure F1 of the elastic body 4, and the valve element 3 moves upward under the action of the fluid pressure F2, so that the fluid pressure flowing through the water flow passage 30 decreases, and the pressure reduction effect is achieved. Air in the air chamber 12 is exhausted through the exhaust hole 120.

And (3) closing state: when a product connected with the pressure reducing valve is blocked or closed, the valve core 3 moves upwards under the action of fluid pressure F2 until the upper surface of the valve column 31 is attached to the lower surface of the annular boss 511, the pressure stabilizing valve is closed, and the pressure of the fluid outflow end is stabilized at a certain pressure P value so as to ensure that the fluid pressure borne by the pipeline and the product is within a safety range.

Example two

As shown in fig. 9, the present embodiment is different from the first embodiment only in that: the sealing structure is a sealing gasket 512, a gasket groove 510 is formed in the center of the bottom of the upper end cover 5, the sealing gasket 512 is fixedly installed in the gasket groove 510, and the upper surface of the support ring 22 abuts against the sealing gasket 512. The rest of the structure of the present embodiment is the same as that of the first embodiment.

The working principle of the embodiment is as follows:

And (3) closing state: when a product connected with the pressure reducing valve is blocked or closed, the valve core 3 moves upwards under the action of the fluid pressure F2 until the upper surface of the valve column 31 is completely attached to the lower surface of the sealing gasket 512, the pressure stabilizing valve is closed, and the pressure of the fluid outflow end is stabilized at a certain pressure P value so as to ensure that the fluid pressure borne by the pipeline and the product is within a safety range.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a take end cover seal bearing structure's fluid surge damping valve which characterized in that: including cavity valve body, supporting seat, case, elastomer, upper end cover, end cap seal bearing structure and lower end cover, cavity valve body is inside to separate into intake antrum and air chamber through the baffle, and the supporting seat is installed in the baffle top, the upper end cover fix at cavity valve body upper end, the inlet opening has been seted up on the upper end cover, lower end cover fixed mounting under cavity valve body tip, the apopore has been seted up on the lower end cover, the case is inside to be offered along the axis direction and to be used for the intercommunication the rivers passageway of inlet opening and apopore, the case include valve post and valve cap, the outer wall of valve cap and the inner wall seal cooperation of air chamber, the exhaust hole has been seted up on the wall upper portion of air chamber, the elastomer establish between baffle and the valve cap and be compression state, the valve post passes baffle and supporting seat can move from top to bottom, end cap seal bearing structure including establishing in upper end cover bottom and being used for when the The supporting ring is arranged at the top of the supporting seat and used for supporting the sealing structure, and the wall surface of the supporting ring is provided with an overflowing hole used for communicating the water inlet hole with the water flow channel.

2. A fluid regulator valve with end cap seal support structure as claimed in claim 1, wherein: the sealing structure is an annular boss formed by extending downwards from the center of the bottom of the upper end cover, the outer diameter of the annular boss is the same as the inner diameter of the supporting ring, and the inner wall surface of the supporting ring is in sealing fit with the outer wall surface of the annular boss.

3. A fluid regulator valve with end cap seal support structure as claimed in claim 1, wherein: the sealing structure is a sealing gasket, a gasket groove is formed in the center of the bottom of the upper end cover, the sealing gasket is fixedly installed in the gasket groove, and the upper surface of the support ring props against the sealing gasket.

4. A fluid regulator valve with end cap seal support structure as claimed in claim 1, wherein: the upper portion of intake antrum is equipped with round annular step, the supporting seat fix on the annular step, the lower surface of supporting seat protrusion forms a solid fixed ring downwards, install Y type sealing washer between the internal face of solid fixed ring and the outer wall of valve post.

5. A fluid regulator valve with end cap seal support structure as claimed in claim 1, wherein: valve column and valve cap be integrated into one piece structure, the valve column is established perpendicularly in valve cap top center department, rivers passageway run through completely valve column and valve cap, Y shape sealing washer groove has been seted up on the outer wall of valve cap, Y shape sealing washer inslot install be used for with the sealed complex Y type sealing washer of air chamber internal face.

6. A fluid regulator valve with end cap seal support structure as claimed in claim 1, wherein: and the upper part and the lower part of the outer wall of the hollow valve body are respectively provided with an O-shaped sealing ring groove, and an O-shaped sealing ring is arranged in the O-shaped sealing ring groove.

7. A fluid regulator valve with end cap seal support structure as claimed in claim 1, wherein: the center of the bottom of the valve cap is provided with a water flow buffer area, and the cross section size of the water flow buffer area is larger than that of the water flow channel.

8. A fluid regulator valve with end cap seal support structure as claimed in claim 1, wherein: the water inlet holes are provided with a plurality of water inlet holes which are respectively staggered with the positions of the water flow channels.

9. A fluid regulator valve with end cap seal support according to any one of claims 1-8, wherein: the elastic body is a spring or rubber.

10. A fluid regulator valve with end cap seal support according to any one of claims 1-8, wherein: the upper end cover is made of one of NBR, TPR, TPE and EPDM.